An appeal to authority would be “Experts disagreeing with you proves you wrong.” That’s not what they’re saying. They’re taking as read that the top level comm

An appeal to authority would be “Experts disagreeing with you proves you wrong.” That’s not what they’re saying. They’re taking as read that the top level comment is wrong (as explained by a number of other comments), and making an observation about the circumstances surrounding the incorrect comment, as well as the theme it represents in the broader discourse.